"Ennichi" means Japanese summer festival which is opened at shrine in all of Japan.

It associate "朝顔(asagao)" and "ヨーヨー掬い(yoyo-sukui)", "浴衣(yukata)", "うちわ(uchiwa)" , "花火(fireworks)", "金魚掬い(kingyo-sukui)" ,お面(omen) and so on.......

This is Japanese summer tradition.